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Headphone Amplifiers

Manufacturer

Bottlehead Crack OTL

Bottlehead Crack OTL

“Fantastic amp. Easy and fun to build. Many opportunities to modify the amp. Vibrant on line community dedicated to the amp. Due to it being an otl amp, it's optimized for high impedance headphones. Don't bother with Grados, for instance. I don't view this as a con, but merely as a design characteristic. Truly synergistic with my HD600's. I've used film and teflon bypass caps to bypass all...” --Nate L

100% Positive Reviews
Bottlehead S.E.X. (Single-Ended eXperimenter's kit)

Bottlehead S.E.X. (Single-Ended eXperimenter's kit)

“The Bottlehead S.E.X. is the mid-level DIY tube headphone amp from Bottlehead USA. As per the very well-known Crack OTL amplifier, it's a kit that you build yourself, but it's a little more challenging than the Crack due to the extra components involved.   In short, the Crack and S.E.X. both have their own strengths, but the S.E.X. is a definite step up in overall sound (which is a...” --Loquah

100% Positive Reviews
Bottlehead Mainline

Bottlehead Mainline

“I have created a thread to discuss and compare the Bottlehead range of headphone amplifiers so I'll share a small excerpt here just abouthow the amp sounds, but I'd recommend heading over to the thread for much more information and opportunities to read other people's opinions and discuss your thoughts:...” --Loquah

100% Positive Reviews
Bottlehead Smack

Bottlehead Smack

Bottlehead Headphone Amplifier with output transformers.

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